Program to find the value of tan ( nÎ ˜ ) | C # program to find the value of cos ( n - theta ) ; This function use to calculate the binomial coefficient upto 15 ; use simple DP to find coefficient ; Function to find the value of ; store required answer ; use to toggle sign in sequence . ; calculate numerator ; calculate denominator ; Driver code
using System ; public class GFG { private static int MAX = 16 ; static long [ , ] nCr = new long [ MAX , MAX ] ; static void binomial ( ) { for ( int i = 0 ; i < MAX ; i ++ ) { for ( int j = 0 ; j <= i ; j ++ ) { if ( j == 0 j == i ) nCr [ i , j ] = 1 ; else nCr [ i , j ] = nCr [ i - 1 , j ] + nCr [ i - 1 , j - 1 ] ; } } } static double findTanNTheta ( double tanTheta , int n ) { double ans = 0 , numerator = 0 , denominator = 0 ; long toggle = 1 ; for ( int i = 1 ; i <= n ; i += 2 ) { numerator = numerator + nCr [ n , i ] * Math . Pow ( tanTheta , i ) * toggle ; toggle = toggle * - 1 ; } denominator = 1 ; toggle = - 1 ; for ( int i = 2 ; i <= n ; i += 2 ) { numerator = numerator + nCr [ n , i ] * Math . Pow ( tanTheta , i ) * toggle ; toggle = toggle * - 1 ; } ans = numerator / denominator ; return ans ; } public static void Main ( ) { binomial ( ) ; double tanTheta = 0.3 ; int n = 10 ; Console . Write ( findTanNTheta ( tanTheta , n ) ) ; } }